LT1121CS8-3.3

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LT1121CS8-3.3

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LDO Voltage Regulators LT1121 - Micropower Low Dropout Regulators with Shutdown

  • FabricanteDispositivos analógicos

  • Peça do Fabricante #LT1121CS8-3.3

  • Ficha Técnica LT1121CS8-3.3 DataSheet

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Description

The LT1121CS8-3.3 is a low-dropout (LDO) linear voltage regulator designed to provide a stable 3.3V output from a higher input voltage source. It is part of Linear Technology's series of voltage regulators, known for their efficiency and reliability. Key features of the LT1121CS8-3.3 include a low dropout voltage, typically around 0.4V at 150mA, which allows for efficient operation even with a small voltage difference between input and output.
The device offers a maximum output current of 150mA, making it suitable for powering low to moderate power applications such as microcontrollers, sensors, and other electronic circuits. It includes built-in current limiting, thermal shutdown, and a safe operating area (SOA) protection to ensure safe operation under various conditions.
Housed in an 8-lead SOIC package, the LT1121CS8-3.3 is compact and easy to integrate into a variety of applications. It is known for its low quiescent current, ensuring efficient power usage, which is particularly beneficial in battery-powered devices.

Equivalent

The LT1121CS8-3.3 is a low-dropout (LDO) voltage regulator. Equivalent products from other manufacturers include:
1. LM2937IMP-3.3 by Texas Instruments
2. MIC5205-3.3YM5 by Microchip Technology
3. LP2980-3.3 by Texas Instruments
4. NCP1117ST33T3G by ON Semiconductor
These equivalents provide similar voltage regulation and performance characteristics, though always verify specific application requirements and pin compatibility.

Features

The LT1121CS8-3.3 is a low-dropout (LDO) linear voltage regulator designed by Analog Devices. It is known for its efficiency and reliability in providing a stable 3.3V output. Here are some key features:
1. Low Dropout Voltage: The regulator offers a low dropout voltage of approximately 0.4V at a load current of 150mA, making it suitable for low-voltage applications.
2. Output Current: It can supply up to 150mA of output current, which is suitable for powering small circuits and devices.
3. Quiescent Current: It has a low quiescent current of about 30µA, enhancing its efficiency, especially in battery-operated devices.
4. Protection Features: The regulator includes features such as current limiting and thermal shutdown to protect against overload and overheating.
5. Reverse Battery Protection: It is designed to prevent damage in case of reverse battery connections.
6. Package Options: The LT1121CS8-3.3 is available in a small, surface-mount SO-8 package, which is suitable for space-constrained applications.
These features make the LT1121CS8-3.3 ideal for applications requiring efficient voltage regulation with minimal power loss.

Pinout

The LT1121CS8-3.3 is a low dropout linear voltage regulator. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. The main function of this device is to provide a stable 3.3V output voltage from a higher input voltage with low dropout, meaning it can operate efficiently with a minimal difference between input and output voltages. It features a maximum output current of 150mA, making it suitable for applications requiring moderate power levels. The regulator includes built-in protection features such as current limiting and thermal shutdown to ensure safe operation. The 8-pin configuration typically includes pins for input voltage, ground, output voltage, and additional functionality like shutdown control or bypass capacitor connections.

Manufacturer

The LT1121CS8-3.3 is manufactured by Linear Technology Corporation. Linear Technology, founded in 1981, was a company known for designing, manufacturing, and marketing a broad line of high-performance analog integrated circuits. These circuits are essential components in a variety of devices and systems, providing functions such as signal conditioning, power management, and data conversion. Linear Technology's products were used in applications across various industries, including telecommunications, automotive, industrial, medical, and consumer electronics.
In 2017, Linear Technology was acquired by Analog Devices, Inc. (ADI), a company that similarly specializes in the design and production of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. ADI serves a wide array of markets with a focus on addressing complex engineering challenges across various application areas.

Application

The LT1121CS8-3.3 is a low-dropout (LDO) linear voltage regulator designed for applications requiring efficient power management and stable 3.3V output. Its application areas include:
1. Portable Devices: Ideal for battery-powered gadgets due to low dropout voltage and low quiescent current.
2. Telecommunications: Suitable for powering communication devices requiring stable voltage output.
3. Industrial Equipment: Used in systems needing reliable voltage regulation amid varying load conditions.
4. Consumer Electronics: Supports stable power supply in devices like set-top boxes and routers.
5. Embedded Systems: Provides precise voltage regulation for microcontrollers and processors.
Its compact size and thermal protection also make it suitable for space-constrained applications.

Package

The LT1121CS8-3.3 is a low dropout linear regulator manufactured by Analog Devices, formerly Linear Technology. It comes in an SO-8 package, an 8-pin small outline package commonly used for surface-mounted devices.

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